ITEM NAME:USB To RS232 Serial Port 9 Pin DB9 Cable Serial COM Port Adapte Cable Convert3CA Descriptionï ¼Å¡ Type: USB To 9 Pin Serial Line Color:Blue USB specification 1.1 and 2.0 compliant Supports RS232 serial interface Supports over 1Mbps data transfer rate Supports remote wake up and power management Compatible with Windows 98/Se/ME/2000/XP, can NOT work for Vista. This product used CH340 Chip,please know it . Package Includeï ¼Å¡1* USB To 9 Pin Serial Line.Supports RS232 serial interface. Type: USB To 9 Pin Serial Line. USB specification 1.1 and 2.0 compliant.